JP7239794B1 - Dairy cow feeding method - Google Patents

Abstract

An object of the present invention is to suppress an increase in the urine pH value of dairy cows even after parturition. [Solution] Feeding a mixed feed prepared by mixing rough feed such as silage or fibrous feed with compound feed during a dry milk period, feeding a pineapple-derived feed containing a proteolytic enzyme, A feed feeding method for dairy cattle, wherein the protease is fed so that the enzyme activity is 600 GDU or more per day. Also, a pineapple-derived feed prepared by mixing cashew nut shells and enzyme-treated pineapple rhizome by-products with pineapple meal as the main raw material is uniformly mixed in the mixed feed and fed. [Selection drawing] Fig. 4

Description

The present invention relates to a feed feeding method and feed for dairy cows.

Conventionally, various methods of feeding feed to dairy cows have been proposed. For example, Patent Literature 1 proposes a feeding management method for preventing milk fever (impossibility to stand) and hypocalcemia in dairy cows, which tend to develop from just before parturition to within 30 days after parturition.

In general, feed is given while paying attention to the ion balance, and whether the ion balance is appropriate or not is confirmed by measuring the urine pH value. This is because the urine pH value serves as a measure of the ion balance (blood pH) in the body. A cow with a urine pH value of 8 and a high calf may develop postpartum hypocalcemia, and there is a demand to lower the urine pH value.

On the other hand, the inventor of the present application has been researching methods of raising milk and dairy cows, feed, etc., and has developed functional milk and feed for dairy cows, such as milk that induces sleep ( See Patent Documents 2 and 3). In order to solve the above problems, we have been researching feed for dairy cows.

JP 2009-022258 A JP 2016-082961 A JP 2017-169451 A

The inventors of the present application focused on the fact that the feed containing protease has an effect on the urine pH value, and after repeated research, the pineapple-derived feed containing protease was added for a certain period of time during the dry period. In the above, the present inventors have found that when fed to dairy cows in a certain manner, it greatly contributes to suppressing the increase in urine pH value after parturition, and have made the present invention.

INDUSTRIAL APPLICABILITY The present invention provides a feed feeding method for dairy cows and a feed for dairy cows, in which an increase in urine pH value is suppressed even after parturition.

A feed feeding method for dairy cattle according to one aspect of the present invention comprises feeding mixed feed prepared by mixing rough feed such as silage and fiber feed with compound feed during the dry period, and feeding during the dry period. In addition, feeding a pineapple-derived feed containing a protease, and feeding the protease so that the enzyme activity is 600 GDU or more per day, suppresses the increase in urine pH after delivery. It is characterized by

where GDU is gelatin digestion unit. In this way, by feeding the pineapple-derived feed so that the enzymatic activity of the protease is contained in a predetermined amount or more during the dry milk period, it is possible to suppress an increase in the urine pH value even after parturition. . As the mixed feed, for example, a mixed feed for the dry period in which nutrients such as vitamins are adjusted can be used.

Further, in this feed feeding method for dairy cows, the protease is desirably fed such that the enzyme activity is 600 to 2400 GDU per day. By doing so, it is possible to further suppress an increase in the urine pH value.

Moreover, in this feed feeding method for dairy cows, it is desirable to feed the proteolytic enzyme so that the enzyme activity is 2400 GDU or more per day. By doing so, it is possible to further suppress an increase in the urine pH value.

In addition, this feeding method for dairy cows is characterized in that the pineapple-derived feed is uniformly mixed with the mixed feed and fed. By doing so, the mixed feed and the pineapple-derived feed are evenly mixed, which is effective because the dairy cows eat well.

Further, in this feed feeding method for dairy cows, it is preferable that the mixed feed be a mixed feed prepared by mixing the roughage with the mixed feed, wherein the roughage contains grass silage and corn silage.

Further, in this feed feeding method for dairy cows, it is desirable that the pineapple-derived feed be a mixture of cashew nut shells and enzyme-treated pineapple rhizome by-products with pineapple meal as the main raw material.

In addition, in this feed feeding method for dairy cows, it is desirable to top-dress the dry cow mixed feed in addition to the mixed feed in the latter half of the dry milk period.

Further, in this feed feeding method for dairy cows, it is desirable that the amount of the mixed feed fed is smaller in the latter half of the dry-milk period than in the early period of the dry-milk period. This is suitable for suppressing an increase in urine pH value.

In addition, it is desirable that the feed feeding method for the dairy cows is to feed the mixed feed twice in the morning and evening, and to allow free feeding of water, salt and hay.

In addition, in this feed feeding method for dairy cows, it is desirable that the cows be fed in a free pan with a stanchion installed, and that the stanchion be put on the feed to prevent it from stealing the feed of other cows.

A dairy cow feed according to one aspect of the present invention is a feed that suppresses an increase in urine pH after parturition by being fed to dairy cows during the dry period. A mixed feed prepared by mixing feed and a pineapple-derived feed containing a protease, and the protease is included in the daily feed for dairy cows in an amount such that the enzyme activity is 600 GDU or more. It is characterized by being

In this way, the pineapple-derived feed is included in the feed to be fed during the dry milk period so that the enzymatic activity of the protease is greater than or equal to a predetermined amount, thereby suppressing an increase in the urine pH value even after parturition. be able to.

In addition, it is desirable that the feed for dairy cows contains the proteolytic enzyme in such an amount that the daily feed for dairy cows has an enzyme activity of 600 to 2400 GDU.

In addition, it is desirable that the feed for dairy cows contains the proteolytic enzyme in such an amount that the daily feed for dairy cows has an enzyme activity of 2400 GDU or more.

Also, in this feed for dairy cattle, the mixed feed is desirably a mixed feed prepared by mixing the roughage containing grass silage and corn silage with the mixed feed.

Moreover, in this feed for dairy cows, the pineapple-derived feed is preferably a mixture of pineapple meal as a main raw material with cashew nut shells and enzyme-treated pineapple rhizome by-products.

According to the present invention, an increase in urine pH value can be suppressed even after childbirth.

FIG. 4 is a diagram showing test results obtained by feeding feed according to the method of the present invention. FIG. 4 is a diagram showing test results obtained by feeding feed according to the method of the present invention. FIG. 4 is a diagram showing test results obtained by feeding feed according to the method of the present invention. FIG. 4 is a diagram showing test results obtained by feeding feed according to the method of the present invention.

<Embodiment>
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments according to the present invention will be described below.
A feed feeding method for dairy cows according to an embodiment of the present invention feeds predetermined feed for dairy cows during a dry milk period.

As an example of the present embodiment, this feed for dairy cows is a mixed feed prepared by mixing roughage containing grass silage and corn silage with mixed feed for the dry period in which nutrients such as vitamins are adjusted. , a pineapple-derived feed containing a protease was uniformly mixed in a mixed feed, and the protease was adjusted to have an enzyme activity of 600 to 2400 GDU per day. Other roughages and mixed feeds can also be used as roughages and mixed feeds, and GDU is a gelatin digestion unit.

The pineapple-derived feed contained in this feed for dairy cows is a mixture of cashew nut shells and enzyme-treated pineapple rhizome by-products, with pineapple meal as the main raw material.

The dry period refers to the period during which milking is stopped after 280 to 300 days from the start of milking and the cow is allowed to rest for a predetermined period in preparation for the next delivery. In this embodiment, the dry period is from 8 weeks before delivery to the delivery date, the early dry period is from 8 to 3 weeks before the expected delivery date, and the late dry period is from 3 weeks before the expected delivery date to the delivery date. Feed was fed until

In this case, the feed for dairy cows is fed twice a day in the morning and evening, but the amount of mixed feed fed is smaller in the latter half of the dry period than in the early period of the dry period. Specifically, as an example, 16 kg/day was fed during the early dry period and 10 kg/day during the late dry period.

In addition to the mixed feed, the mixed feed for dry cows was top-dressed in the late dry period.

In addition, water, salt, and hay are fed freely, and the cows are fed in free pans with stanchions installed.

As described above, according to the feed feeding method for dairy cows using the feed for dairy cows of the present embodiment, the pineapple-derived feed in which the proteolytic enzyme activity is 600 to 2400 GDU per day is included. By feeding dairy cow feed during the dry period, it is possible to suppress an increase in the urine pH value even after parturition of the dairy cow.

<Effect test>
Next, in order to confirm the effects of the dairy cow feed and feeding method for dairy cows, three types of pineapple meal with different enzyme activities were fed to dry cows, and the nutrient metabolism before and after parturition and the urine pH value were evaluated. I tested how it works.

As for feed components, pineapple meal and compound feed used for TMR preparation were analyzed once during the test period. A portion of TMR fed approximately once every two weeks during the study period was collected and analyzed. In addition, when the TMR design was changed, and when the silage or hay preparation date or harvest date was changed, the component analysis was performed each time. And the test method is as follows.

(test cow)
Twenty dry cows were grouped so that there was no variation in average calving, BCS (body condition score), and calving time, and the survey was conducted from 8 weeks before the expected calving date to 3 weeks after calving.

(treatment area)
5 cows × 4 processing ・ Pine A group: Pineapple meal A (enzyme activity 120,000 GDU / 18 kg bag, 600 GDU / 100 g per day) fed ・ Pine B group: Pineapple meal B (enzyme activity 240,000 GDU / 18 kg bag) , 1,200 GDU/100 g per day) were fed. Pine C group: Pineapple meal C (enzyme activity: 480,000 GDU/18 kg bag, 2400 GDU/100 g per day) was fed. Control group: Untreated.

Here, pineapple meal A, B, and C are pineapple-derived feed "Pine Mix-Up" (manufactured by Eiichi Kondo Co., Ltd.), 2400 GDU / g of bromelain, 50 g (pine A area), 100 g (pine B area) ), and 200 g (Pine section C). A GDU is a unit of gelatin digestion.

Pine A section: 50 g x 2400 GDU/g = 120,000 GDU/bag Pine B section: 100 g x 2400 GDU/g = 240,000 GDU/bag Pine C section: 200 g x 2400 GDU/g = 480,000 GDU/bag

- The feed was fed twice in the morning and evening (around 5:00 am and around 3:30 pm).
・The test cows were fed in free pans with stanchions installed, and the stanchions were put on the cows to prevent them from stealing the feed of other cows.
・During the dry period, the mixed feed (TMR) prepared by mixing grass silage and corn silage and the mixed feed for the dry period is 16 kg / 10 kg/day was fed during the late period of dry milk (from 3 weeks before the expected date of delivery to the date of delivery).

・In the late dry period, in addition to the above TMR, the mixed feed for the dry period was fed in a top dress so that the amount was 4 kg / day, and the enzyme activity of the cows in the pine section was evaluated for each pine section. 100 g/day of different pineapple-derived feeds (a mixture of cashew nut shells and enzymatically treated pineapple rhizome by-products containing pineapple meal as the main raw material) was mixed by hand so as to be uniform in the TMR and fed.
・ Water, salt (mineral salt Serenix), and hay were freely fed in both the control plot and the pine plot.

(Test results)
Shown in Table 1 and FIGS.

- BCS and RFS BCS and RFS (rumen fill score) were checked once a week at around 10:00 am. Table 1 shows the results of BCS, RFS and urine pH values. In the BCS, there was a tendency for the pine B section to be lower than the control section at delivery. The BCS score at 3 weeks after parturition was lower in the pine A and B sections than in the control section. There was no difference in RFS.

- Urinary pH value Urine pH values were measured using a simple pH meter at 8 weeks, 3 weeks, and 1 week before the expected date of delivery, and at 0 and 1 weeks after delivery. Table 1 shows the results.

While the average urine pH value in the control group slightly increased during the period from the dry period to one week before parturition, all pine groups maintained or slightly decreased, indicating that at least during the dry period. It is recognized that feeding pineapple-derived feed containing bromelain has an effect of suppressing an increase in urine pH value. In particular, the effect is large in the pine section C.

・Blood properties and milk volume Blood samples were collected 8 weeks before the expected date of delivery (dry milk), 3 weeks, 1 week, and 0 and 1 weeks after delivery. TP, BUN, total cholesterol (T-cho) , ketone body fraction, NEFA, Ca, P, Mg, AST, γ-GTP, blood glucose were analyzed. In addition, the milk yield and Brix value of colostrum were recorded.

Figures 1 to 4 show changes in blood properties and milk yield. In addition, since one of the test cows was euthanized after parturition in Pine C area, data for four cows were used for postpartum statistical processing.

The blood Ca concentration at 3 weeks after parturition was higher in the pine C group than in the control group. In addition, the blood P concentration at week 3 tended to be lower in the pine A group than in the control group. In addition, there was no difference in milk yield.

Three weeks after parturition, the blood Ca concentration showed a high value in the pineapple C group. and suppresses the decrease in blood Ca concentration).

Therefore, by feeding pine A to C to dry cows, the urine pH increased from dry to dry milk in the control group without pine, while dry milk in pine A to C increased. The increase in urinary pH was suppressed from the time of milking to the time of dry milk, and the increase in urine pH value was also suppressed after parturition. In particular, in the Pine C section, the effect of suppressing the increase in urine pH value is greater, and it is also recognized that the decrease in postpartum blood Ca concentration is prevented.

From the dry period to 3 weeks after parturition, hypocalcaemia, ketosis, heat input, mutation of the abomasum, postpartum stagnation, and metritis were observed. No difference was observed in the incidence of hematoma.

In addition, since it is most effective in the pineapple section C, the amount of pineapple-derived feed containing proteolytic enzymes is further increased to further increase the enzyme activity, thereby further increasing the urine pH value. expected to be suppressed. However, if the amount of pineapple-derived feed is increased too much, the taste of the feed will change significantly, and the nutritional balance of the whole feed for dairy cows will be disturbed.

From the above test results, by performing the feed feeding method for dairy cows using the above-described dairy cow feed, the enzyme activity of the protease is set to 600 GDU or more per day For dairy cows containing pineapple-derived feed It was shown that feeding the feed during the dry period can suppress the increase in urine pH value even after parturition of dairy cows.

As described above, preferred embodiments of the present invention have been described with reference to the drawings, but various additions, changes, or deletions can be made without departing from the scope of the present invention. Accordingly, such are also included in the scope of the present invention.

Claims (16)

feeding mixed feed prepared by mixing rough feed such as silage and fiber feed with compound feed during the dry period;
feeding a pineapple-derived diet containing proteolytic enzymes during the dry period;
A feed feeding method for dairy cows, wherein the proteolytic enzyme is fed so that the enzyme activity is 600 GDU or more per day, thereby suppressing an increase in urine pH after parturition. The proteolytic enzyme is fed so that the enzyme activity is 600 GDU to 2400 GDU per day,
The method of supplying feed to dairy cattle according to claim 1. The proteolytic enzyme is fed so that the enzyme activity is 2400 GDU or more per day,
The method of supplying feed to dairy cattle according to claim 1. The pineapple-derived feed is uniformly mixed with the mixed feed and fed.
A method of feeding a dairy cow according to any one of claims 1 to 3. The mixed feed is a mixed feed prepared by mixing the roughage containing grass silage and corn silage with the mixed feed.
A method of feeding a dairy cow according to any one of claims 1 to 4. The pineapple-derived feed is a mixture of cashew nut shells and enzyme-treated pineapple rhizome by-products, with pineapple meal as the main raw material.
A method of feeding a dairy cow according to any one of claims 1 to 5. In the latter half of the dry period, in addition to the mixed feed, a dry period mixed feed is top-dressed,
A method of feeding a dairy cow according to any one of claims 1 to 6. In the latter half of the dry period, the amount of the mixed feed to be fed is less than in the early period of the dry period.
A method of feeding a dairy cow according to any one of claims 1 to 7. The mixed feed is fed twice in the morning and evening,
A method of feeding a dairy cow according to any one of claims 1 to 8. Water, salt and hay are free-feeding.
A method of feeding a dairy cow according to any one of claims 1 to 9. The cows are fed in free pans with stanchions installed, and the stanchions are put on the cows when feeding them to prevent other cows from stealing their feed.
A method of feeding a dairy cow according to any one of claims 1 to 10. It is a feed that suppresses the increase in urine pH after parturition by being fed to dairy cows during the dry period,
Rough feed such as silage and fiber feed, mixed feed prepared by mixing compound feed, and pineapple-derived feed containing proteolytic enzymes,
A feed for dairy cows, wherein the proteolytic enzyme is contained in the daily feed for dairy cows in an amount such that the enzyme activity is 600 GDU or more. The proteolytic enzyme is contained in the dairy cow's feed per day in an amount such that the enzyme activity is 600 GDU to 2400 GDU,
The feed for dairy cattle according to claim 12. The proteolytic enzyme is contained in the dairy cow's feed per day in an amount such that the enzyme activity is 2400 GDU or more,
The feed for dairy cattle according to claim 12. The mixed feed is a mixed feed prepared by mixing the roughage containing grass silage and corn silage with a mixed feed.
Dairy cow feed according to any one of claims 12 to 14. The pineapple-derived feed is a mixture of cashew nut shells and enzyme-treated pineapple rhizome by-products, with pineapple meal as the main raw material.
A dairy cow feed according to any one of claims 12 to 15.

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